CN104038456B - The communication means and communication node of equipment room direct communication - Google Patents

The communication means and communication node of equipment room direct communication Download PDF

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Publication number
CN104038456B
CN104038456B CN201410240237.7A CN201410240237A CN104038456B CN 104038456 B CN104038456 B CN 104038456B CN 201410240237 A CN201410240237 A CN 201410240237A CN 104038456 B CN104038456 B CN 104038456B
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signal
mrow
node
msub
sent
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CN104038456A (en
Inventor
韩圣千
陈盼
杨晨阳
黄伟才
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Beijing Zhigu Ruituo Technology Services Co Ltd
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Beijing Zhigu Ruituo Technology Services Co Ltd
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Priority to CN201410240237.7A priority Critical patent/CN104038456B/en
Publication of CN104038456A publication Critical patent/CN104038456A/en
Priority to PCT/CN2015/077990 priority patent/WO2015180553A1/en
Priority to US15/314,925 priority patent/US10069661B2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a kind of communication means and communication node of equipment room direct communication, it is related to D2D technical fields.Methods described includes：First node receives the interference signal from interfering nodes；The first node sends the interference signal and signal to be sent in a manner of at least one section point can receive.The communication means and communication node of the embodiment of the present invention are effectively reduced the interference that cellular network communicates to D2D.The resource of base station need not be consumed using the communication means and communication node of the embodiment of the present invention, Signalling exchange is few, is advantageous to improve the level of resources utilization.

Description

The communication means and communication node of equipment room direct communication
Technical field
The application is related to equipment room (Device-to-Device, D2D) direct communication technical field, more particularly to one kind is set The communication means and communication node of direct communication between standby.
Background technology
In recent years, the D2D communications under traditional cellular network have attracted extensive attention.In D2D communications, user equipment (UE) it can both be communicated by base station and other UE, can also be directly connected to communicate.D2D communications can improve internetworking Energy：The availability of frequency spectrum is improved, preferably covering is realized, reduces congestion problems.Can also be by higher data rate, relatively low Power consumption and smaller congestion improve Consumer's Experience.
But above-mentioned benefit right and wrong are obtained often with there is challenge, because there is dry between cellular network and D2D links Disturb, such as：If D2D communication using cellular network downlink resource (time division duplex (Time Division Duplexing, TDD) in system, it is meant that D2D communications occur in descending time slot；In FDD (Frequency Division Duplexing, FDD) in system, it is meant that D2D communications occur in downstream frequency), the downstream signal meeting of the base station of cellular network Recipient D2D UE are interfered, interference in this case is referred to as descending interference herein, as shown in Fig. 1 (a), UE1, In the coverage of base station BS 1, UE2 and UE3 are that D2D communicates pair, among the process that UE2 transmits to UE3, are accounted for by UE2, UE3 With cell downlink channel, the influence for the signal for receiving UE2 transmittings to UE3 from the downstream signal that base station BS 1 is launched now be present. In another example if D2D communications using cellular network ascending resource (in a tdd system, it is meant that D2D communications occur when up Gap；In FDD system, it is meant that D2D communications occur in upstream frequency), upward signals of other UE to the base station of cellular network Recipient D2D UE can be interfered, interference in this case is referred to as uplink interference herein, as shown in Fig. 1 (b), UE1, In the coverage of base station BS 1, UE2 and UE3 are that D2D communicates pair, among the process that UE2 transmits to UE3, are accounted for by UE2, UE3 With cell uplink channel, now exist from UE1 and be transmitted into the upward signal of base station BS 1 to the UE3 receptions UE2 signals launched Influence.
The content of the invention
The purpose of the application is：A kind of communication means and communication node of equipment room direct communication are provided.
In a first aspect, the embodiments of the invention provide a kind of communication means of equipment room direct communication, methods described includes：
First node receives the interference signal from interfering nodes；
The first node sends the interference signal and treated in a manner of at least one section point can receive Send signal.
Second aspect, the embodiments of the invention provide a kind of communication node of equipment room direct communication, the communication node Including：
One receiving module, for receiving the interference signal from interfering nodes；
One sending module, for it can be received by least one section point in a manner of, send the interference signal with And signal to be sent.
The communication means and communication node of the embodiment of the present invention obtain interference signal by the initiator to be communicated by D2D, will Interference signal and signal to be sent are sent to the recipient that D2D communicates, enabling realize that interference eliminates in recipient, so as to have Effect ground reduces the interference that cellular network communicates to D2D.Need not be sacrificial using the communication means and communication node of the embodiment of the present invention The resource of domestic animal base station, Signalling exchange is few, is advantageous to improve the level of resources utilization.
Brief description of the drawings
Fig. 1 (a) is descending interference scene schematic diagram；
Fig. 1 (b) is uplink interference schematic diagram of a scenario
Fig. 2 is a kind of communication means flow chart of equipment room direct communication of present aspect embodiment；
Fig. 3 is a kind of structured flowchart of the communication node of equipment room direct communication of present aspect embodiment；
Fig. 4 is the structured flowchart of the communication node of another equipment room direct communication of present aspect embodiment；
Fig. 5 be present aspect embodiment equipment room direct communication communication node in merging module a kind of possible realization The structured flowchart of mode；
Fig. 6 be present aspect embodiment equipment room direct communication communication node in merging module determining unit one kind The structured flowchart of possible implementation；
Fig. 7 is second of the determining unit of merging module in the communication node of the equipment room direct communication of present aspect embodiment The structured flowchart of the possible implementation of kind；
Fig. 8 is the 3rd of the determining unit of merging module in the communication node of the equipment room direct communication of present aspect embodiment The structured flowchart of the possible implementation of kind；
Fig. 9 is the 4th of the determining unit of merging module in the communication node of the equipment room direct communication of present aspect embodiment The structured flowchart of the possible implementation of kind；
Figure 10 is a kind of for the combining unit of merging module in the communication node of the equipment room direct communication of present aspect embodiment The structured flowchart of possible implementation；
Figure 11 is the structured flowchart of the communication node of another equipment room direct communication of present aspect embodiment.
Embodiment
(identical label represents identical element in some accompanying drawings) and embodiment below in conjunction with the accompanying drawings, to the tool of the application Body embodiment is described in further detail.Following examples are used to illustrate the application, but are not limited to scope of the present application.
In various embodiments of the present invention, " first node " and " section point " is D2D communications pair, and " first node " is D2D Initiator in communication, " section point " they are the recipient of D2D communications, and the two is the UE in same base station range, for example, Mobile phone, notebook computer, mobile unit, smart machine etc.." first " and " second " is only used for angle of the difference in D2D communications Color, do not indicate that node necessarily has difference in functionality." interfering nodes " refer to can to D2D communication interfere (D2D communicate take Running time-frequency resource is identical with Radio Resource used in the interfering nodes) equipment, such equipment can be base station in itself, or its He is UE.Such as：Descending interference scene shown in Fig. 1 (a), interfering nodes are the base station BS 1 of cellular network, shown in Fig. 1 (b) Uplink interference scene, interfering nodes be the coverage of base station BS 1 in other UE, UE1.
The method of the embodiment of the present invention runs on the initiator of D2D communications, namely first node.It is as shown in Fig. 2 of the invention A kind of communication means of the equipment room direct communication of embodiment includes：
S210. first node receives the interference signal from interfering nodes.
S220. the first node sends the interference signal in a manner of at least one section point can receive And signal to be sent.
Interference signal is to send to connect on the Radio Resource of the interference signal and signal to be sent in the first node The signal from the interfering nodes received, at least one section point can receive on the Radio Resource The interference signal and signal to be sent that one node is sent, moreover it is possible to receive the interference signal from interfering nodes, first node Interference elimination that the interference signal and signal to be sent sent can be used at section point, etc..
It should be noted that in the method for the embodiment of the present invention, first node at least send the interference signal with And full-duplex mode (assuming that it has a transmitting antenna, a reception antenna) is on the Radio Resource of signal to be sent, With can on same Radio Resource simultaneously transmitting and reception signal, that is, to section point send signal while receive Interference signal, effectively improve spectrum efficiency.And in order to reduce processing delay, after first node receives interference signal, do not understand The code interference signal.
The method of the embodiment of the present invention obtains interference signal by the initiator that is communicated by D2D, by interference signal with it is pending The number of delivering letters is sent to the recipient of D2D communications, enabling realizes that interference eliminates in recipient, so as to be effectively reduced Cellular Networks The interference that network communicates to D2D.The method of the embodiment of the present invention need not consume the resource of base station (for example, carrying out D2D links and honeybee The interference coordination of nest network), Signalling exchange is few, will not reduce the performance of cellular network subscriber, is advantageous to improve utilization of resources effect Rate.
In the method for the embodiment of the present invention, in order to preferably realize that interference eliminates at section point, this hair The method of bright embodiment also includes before S220：
S230. the interference signal and signal to be sent are merged；
Merge the interference signal and signal to be sent can consider the transmission power of first node and described Signal to Interference plus Noise Ratio (SINR) at section point.In S220, sent out in a manner of at least one section point can receive Send the signal after the merging.
In a kind of possible implementation, S230 further comprises：
S231. first node determines respectively：First channel of the first channel between interfering nodes and the first node Feature h12, at least one second channel between the interfering nodes and at least one section point second channel feature h13、 And the 3rd channel characteristics h of at least one 3rd channel between the first node and at least one section point23。 Wherein, channel characteristics comprise at least channel impulse response.
S232. the first node is according to the first channel characteristics h12, second channel feature h13And the 3rd channel Feature h23, merge interference signal and signal to be sent.
In the method for the embodiment of the present invention, can meet first node maximum transmission power constrain under the premise of, according to The first channel characteristics h12, second channel feature h13And the 3rd channel characteristics h23, design interference signal and to be sent The merging weight of signal, to obtain the maximum SINR of at least one section point.
In step S231, the direct user of channel can determine to correspond to by channel estimation method commonly used in the art Channel characteristics, indirect user can obtain corresponding channel characteristics from the direct user of channel.Such as：
In a kind of possible implementation, the scene of the descending interference as shown in Fig. 1 (a), UE2 is first node, UE3 is section point, and interfering nodes are base station BS 1.For the first channel characteristics h12, first node UE2 and base station BS 1 are first The direct user of channel, first node UE2 can carry out channel estimation by receiving the pilot signal of base station BS 1, determine One channel characteristics h12.That is, step S231 includes:
S2311. the first node determines the first channel characteristics h according to the pilot signal from the base station12。
In alternatively possible implementation, the scene of the uplink interference as shown in Fig. 1 (b), UE2 is first segment Point, UE3 are section point, and interfering nodes are another user equipment in the coverage of base station BS 1, are UE1 shown in figure. In this case, UE2 and UE3 before D2D communications are carried out it needs to be determined that may be to the interfering nodes that it is interfered, and true Determine to determine each channel characteristics after interfering nodes.UE2 can determine interfering nodes by way of direct access inquiry base station, enter again afterwards Row channel estimation；Or interfering nodes need not be determined, channel estimation is only carried out by the signal from interfering nodes received.Example Such as, step S231 includes：
S2311 ' first nodes UE2 send request to base station BS 1 or monitor the schedule information of base station BS 1.
Because D2D communications are controlled by base station, resource used in D2D communications is distributed by base station.Therefore, in order to determine Interfering nodes and and then determine channel characteristics, UE2 can send request to base station, or monitor base station BS 1 shared by D2D communications Schedule information on Radio Resource, to obtain the relevant information that can be used in determining interfering nodes.
S2312 ' obtains the reference signal parameter of possible interfering nodes.
UE2 can know reference signal parameter by monitoring the schedule information of base station BS 1；Or base station BS 1 responds UE2 Request, the reference signal parameters of interfering nodes can be sent to.UE2 receives the reference signal of interfering nodes according to the parameter, And then channel estimation is carried out according to the reference signal.Such as and not as limitation：The reference signal can be the letter in LTE system Road detection reference signal (Sounding Reference Signal, SRS), the reference signal are from UE to the big of Base Transmitter The detectable signal of bandwidth, UE to base station send upward signal before, can be specified according to base station SRS parameters (including send week Phase, frequency etc.) to base station send SRS, base station according to the SRS received be demodulated with channel conditions assess etc., with progress Uplink scheduling.In step S2312 ', first node obtains the SRS parameters that base station is sent.
S2313 ' receive the reference signal from the interfering nodes according to the parameter, and according to the reference signal Determine the first channel characteristics h12。
For example, UE2, according to the SRS parameters received, the signal received on corresponding running time-frequency resource is to disturb section The SRS of point, and then channel estimation is carried out according to the SRS, determine the first channel characteristics h12。
It should be noted that in the case that above-mentioned interfering nodes are other UE, the acquisition of reference signal parameter also can be by the Two nodes are completed, and first node obtains the parameter at section point.
For second channel feature h13, direct use of the interfering nodes with above-mentioned at least one section point for second channel Person, above-mentioned at least one section point can determine second channel feature h according to step S2311 ' -2313 '13, first node is from Second channel feature h is obtained at two nodes13.Correspondingly, step S231 includes：
S2314. the second channel feature h from least one section point is obtained13。
For the 3rd channel characteristics h23, first node and corresponding section point are the direct user of the 3rd channel. Because first node and corresponding section point are D2D communications pair, therefore, after D2D connections are established, first node Channel estimation is carried out according to the signal from section point, correspondingly, step S231 includes：
S2315. the connection that the first node is established between at least one section point；
S2316. the first node determines the 3rd channel characteristics h23。
In step S232, interference signal and the weight of signal to be sent can be determined according to following formula：
Wherein, A=P2|h23|2
C=2P1|h12||h13||h23|
And w1For the weight of interference signal, w2For the weight of signal to be sent, P1For the maximum transmission power of interfering nodes, P2For the maximum transmission power of first node,Zero when being modeled as additive white Gaussian noise for the self-interference of first node is equal It is worth variance,For the zero-mean variance of the additive white Gaussian noise of the first channel, above-mentioned two variance is come for first node Say to be known parameters.Correspondingly：Step S232 includes：
S2321. the maximum transmission power P of the interfering nodes is obtained1。
S2322. according to the maximum transmission power P of the interfering nodes1, the first node maximum transmission power P2, with And the first channel characteristics h12, second channel feature h13And the 3rd channel characteristics h23, determine the interference signal and treat Send the weight of signal；
S2323. the interference signal and signal to be sent are merged according to the weight.
Wherein, no matter interfering nodes are base station or other UE, and first node directly can obtain the P to base station1, because This, the maximum transmission power P for being retrieved as receiving the interference signal of the base station from cellular network in step S23211。
It is determined above-mentioned weight, and after merging interference signal and signal to be sent according to above-mentioned weight, you can to corresponding Section point send merge after signal.
It will be understood by those skilled in the art that in the above method of the application embodiment, the sequence number of each step Size is not meant to the priority of execution sequence, and the execution sequence of each step should be determined with its function and internal logic, without answering Any restriction is formed to the implementation process of the application embodiment.
The embodiment of the present invention additionally provides a kind of communication section for being able to carry out the communication means of direct communication between the said equipment Point, when performing the communication means of equipment room direct communication of the embodiment of the present invention, the communication node is the first node.Such as Shown in Fig. 3, the communication node 300 includes：
Receiving module 310, for receiving the interference signal from interfering nodes.
Sending module 320, for it can be received by least one section point in a manner of, send the interference signal with And signal to be sent.
Interference signal is to send the Radio Resource of the interference signal and signal to be sent in the communication node 300 On the signal from the interfering nodes that receives, at least one section point can receive on the Radio Resource The interference signal sent to communication node 300 and signal to be sent, moreover it is possible to receive the interference signal from interfering nodes, lead to The interference that the interference signal and signal to be sent that letter node 300 is sent can be used at section point eliminates, etc. Deng.
It should be noted that the communication node of the embodiment of the present invention is at least sending the interference signal and pending delivered letters Number Radio Resource on be in full-duplex mode (assuming that it has a transmitting antenna, a reception antenna), with can be same On the Radio Resource of sample simultaneously transmitting and reception signal, that is, to section point send signal while receive interference signal, have Improve spectrum efficiency in effect ground.And in order to reduce processing delay, after first node receives interference signal, interference letter is not decoded Number.
Interference signal is obtained by the communication node of the embodiment of the present invention, interference signal and signal to be sent are sent to The recipient of D2D communications, enabling realize that interference eliminates in recipient, communicated so as to be effectively reduced cellular network to D2D Interference.D2D communications are carried out using communication node of the embodiment of the present invention, it is not necessary to consume the resource of base station (for example, carrying out D2D The interference coordination of link and cellular network), Signalling exchange is few, will not reduce the performance of cellular network subscriber, is advantageous to improve money Source utilization ratio.
In order to preferably realize that interference eliminates at section point, as shown in figure 4, the communication of the embodiment of the present invention Node 300 also includes：
Merging module 330, for merging the interference signal and signal to be sent；
Merging module 330, which merges the interference signal and signal to be sent, can consider the transmitting work(of first node SINR at rate and the section point.Sending module 320 is in a manner of at least one section point can receive Send the signal after merging module 330 merges.
In a kind of possible implementation, as shown in figure 5, merging module 330 further comprises：
Determining unit 331, for determining first of the first channel between interfering nodes and the communication node 300 respectively Channel characteristics h12, at least one second channel between the interfering nodes and at least one section point second channel feature h13And the 3rd channel characteristics of at least one 3rd channel between the communication node and at least one section point h23.Wherein, channel characteristics comprise at least channel impulse response.
Combining unit 332, for according to first channel characteristics, second channel feature and the 3rd channel characteristics, closing And interference signal and signal to be sent.
In the communication node of the embodiment of the present invention, combining unit 332 can meet the maximum transmission power of first node Under the premise of constraint, according to the first channel characteristics h12, second channel feature h13And the 3rd channel characteristics h23, design interference The merging weight of signal and signal to be sent is that can obtain the maximum SINR of at least one section point.
The determining unit 331 can be gone back by channel characteristics corresponding to channel estimation method determination commonly used in the art Corresponding channel characteristics can be obtained from the direct user of channel.
In a kind of possible implementation, the scene of the descending interference as shown in Fig. 1 (a), UE2 is implemented for the present invention The communication node of example, UE3 is section point, and interfering nodes are base station BS 1.For the first channel characteristics h12, UE2 and base station BS 1 For the direct user of the first channel, UE2 can carry out channel estimation by receiving the pilot signal of base station BS 1, determine first Channel characteristics h12.That is, as shown in fig. 6, determining unit 331 includes：
First determination subelement 3311, the first channel characteristics h is determined according to the pilot signal from the base station12。
In alternatively possible implementation, the scene of the uplink interference as shown in Fig. 1 (b), UE2 is of the invention real Apply the communication section of example, UE3 is section point, and interfering nodes are another user equipment in the coverage of base station BS 1, institute in figure It is shown as UE1.In this case, UE2 and UE3 before D2D communications are carried out it needs to be determined that may be to interference section that it is interfered Point, and it is determined that determining each channel characteristics after interfering nodes.UE2 can determine interference section by way of direct access inquiry base station Point, carry out channel estimation again afterwards；Or interfering nodes need not be determined, only carried out by the signal from interfering nodes received Channel estimation.Correspondingly, as shown in fig. 7, determining unit 331 may include：
Transmission/monitoring subelement 3311 ', for sending request to the base station BS 1 of the cellular network or monitoring base station BS 1 Schedule information.
Because D2D communications are controlled by base station, resource used in D2D communications is distributed by base station.Therefore, in order to true Determine interfering nodes simultaneously and then determine channel characteristics, UE2 can send request, or prison by transmission/monitoring subelement 3311 ' to base station Schedule information of the base station BS 1 on the shared Radio Resource of D2D communications is listened, to obtain the phase that can be used in determining interfering nodes Close information.
First obtains subelement 3312 ', for obtaining the reference signal parameter of possible interfering nodes.
The schedule information that first acquisition subelement 3312 ' obtains the base station BS 1 listened to can know reference signal parameter； Or base station BS 1 responds UE2 request, the reference signal parameter of interfering nodes can be sent to.UE2 receives according to the parameter The reference signal of interfering nodes, and then channel estimation is carried out according to the reference signal.Such as and not as limitation：This is with reference to letter Number can be the SRS in LTE system) reference signal be the big bandwidth from detectable signal from UE to Base Transmitter, UE is to base station Before sending upward signal, the SRS parameters (including sending cycle, frequency etc.) that can be specified according to base station send SRS to base station, Base station according to the SRS received be demodulated with channel conditions assess etc., to carry out uplink scheduling.First obtains subelement 3312 ' obtain the SRS parameters that base station is sent.
First determination subelement 3313 ', for receiving the reference signal from the interfering nodes according to the parameter, and The first channel characteristics h is determined according to the reference signal12。
For example, the first determination subelement 3313 ' receives according to the SRS parameters received on corresponding running time-frequency resource Signal be interfering nodes SRS, and then according to the SRS carry out channel estimation, determine the first channel characteristics h12。
It should be noted that in the case that above-mentioned interfering nodes are other UE, the acquisition of reference signal parameter also can be by the Two nodes are completed, and the first acquisition subelement 3312 ' directly obtains the parameter at section point.
For second channel feature h13, direct use of the interfering nodes with above-mentioned at least one section point for second channel Person, the communication node 300 of the embodiment of the present invention can determine second channel feature h in section point13Afterwards, directly from section point Place obtains second channel feature h13.Correspondingly, as shown in figure 8, determining unit 331 is in addition to each unit shown in Fig. 6 or Fig. 7, also It may include：
Second determination subelement 3314, for obtaining the second channel feature h from least one section point13。
For the 3rd channel characteristics h23, the communication node 300 and corresponding section point of the present embodiment are the 3rd channel Direct user.Because communication node 300 and corresponding section point are D2D communications pair, therefore, D2D connections are being established Afterwards, communication node 300 can carry out channel estimation according to the signal from section point, as shown in figure 9, determining unit 331 is also Including：
Subelement 3315 is connected, for establishing the company between the communication node 300 and at least one section point Connect；
3rd determination subelement 3316, for determining the 3rd channel characteristics h23。
Combining unit 332 can determine interference signal and the weight of signal to be sent according to above-mentioned formula (1)-(2), and as schemed Shown in 10, combining unit 332 may include：
Second obtains subelement 3321, for obtaining the maximum transmission power P of the interference signal1。
Weight determination subelement 3322, for the maximum transmission power P according to the interfering nodes1, the first node Maximum transmission power P2And the first channel characteristics h12, second channel feature h13And the 3rd channel characteristics h23, really The weight of the fixed interference signal and signal to be sent.
Merge subelement 3323, the weight for being determined according to the weight determining unit merges the interference signal and treated Send signal.
Wherein, no matter interfering nodes are base station or other UE, and communication node 300 directly can obtain the P to base station1, Therefore, second maximum transmission power of the subelement 321 by the interference signal of base station of the reception from cellular network is obtained P1Mode obtain the maximum transmission power P1。
After merging subelement 3323 according to above-mentioned weight merging interference signal and signal to be sent, sending module 320 is The signal after merging can be sent to corresponding section point.
It should be noted that the sending function of each unit and/or module can in the communication node of the embodiments of the present invention Realized by the same module with sending function；The receive capabilities of each unit and/or module can have reception work(by same The module of energy is realized.
Figure 11 is the structural representation of the communication node 1100 for another equipment room direct communication that present aspect embodiment provides Figure, specific implementation of the application specific embodiment not to communication node 1100 limit.As shown in figure 11, the communication node 1100 can include：
Processor (processor) 1110, communication interface (Communications Interface) 1120, memory (memory) 1130 and communication bus 1140.Wherein：
Processor 1110, communication interface 1120 and memory 1130 complete mutual lead to by communication bus 1140 Letter.
Communication interface 1120, for being communicated with the network element of such as client etc..
Processor 1110, for configuration processor 1132, it can specifically perform the correlation step in above method embodiment.
Specifically, program 1132 can include program code, and described program code includes computer-managed instruction.
Processor 1110 is probably a central processor CPU, or specific integrated circuit ASIC (Application Specific Integrated Circuit), or it is arranged to implement the integrated electricity of one or more of the embodiment of the present application Road.
Memory 1130, for depositing program 1132.Memory 1130 may include high-speed RAM memory, it is also possible to also Including nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.Program 1132 specifically may be used For causing the display control unit 1100 to perform following steps：
First node receives the interference signal from interfering nodes；
The first node sends the interference signal and treated in a manner of at least one section point can receive Send signal.
The specific implementation of each step may refer to corresponding in corresponding steps and the unit in above-described embodiment in program 1132 Description, will not be described here.It is apparent to those skilled in the art that for convenience and simplicity of description, it is above-mentioned The equipment of description and the specific work process of module, the corresponding process description in preceding method embodiment is may be referred to, herein not Repeat again.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein Member and method and step, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed Scope of the present application.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with It is stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially in other words The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, institute State computer software product to be stored in a storage medium, including some instructions are causing a computer equipment (can be with It is personal computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the application Suddenly.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), deposit at random Access to memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Embodiment of above is merely to illustrate the application, and is not the limitation to the application, about the common of technical field Technical staff, in the case where not departing from spirit and scope, it can also make a variety of changes and modification, thus it is all Equivalent technical scheme falls within the category of the application, and the scope of patent protection of the application should be defined by the claims.

Claims (22)

1. a kind of communication means of equipment room direct communication, it is characterised in that methods described includes：
First node receives the interference signal from interfering nodes；
The first node sends the interference signal and to be sent in a manner of at least one section point can receive Signal；
Wherein, the first node is at least in complete double on the Radio Resource for sending the interference signal and signal to be sent Work pattern；
At least one section point is receiving the interference signal and the signal to be sent that the first node is sent The Radio Resource on, also receive the interference signal from the interfering nodes；
Wherein, methods described also includes before the transmission interference signal and signal to be sent：
Merge the interference signal and signal to be sent；
In the transmission interference signal and signal to be sent：
Signal after sending the merging in a manner of at least one section point can receive；
Wherein, the merging interference signal and signal to be sent include：
The first node determines the first channel characteristics between the interfering nodes and the first node, the interference respectively At least one second channel feature and the first node and described at least one between node and at least one section point At least one 3rd channel characteristics between individual section point；
The first node merges described dry according to first channel characteristics, second channel feature and the 3rd channel characteristics Disturb signal and signal to be sent；
Wherein, it is described to merge in the interference signal and signal to be sent：
Under conditions of meeting the maximum transmission power constraint of the first node, merge the interference signal and signal to be sent, To obtain the maximum Signal to Interference plus Noise Ratio at least one section point.
2. according to the method for claim 1, it is characterised in that the interfering nodes are the base station of cellular network.
3. according to the method for claim 2, it is characterised in that the first node determines the first channel characteristics bag Include：
The first node determines first channel characteristics according to the pilot signal from the base station.
4. according to the method for claim 1, it is characterised in that the interfering nodes are the user equipment in cellular network.
5. according to the method for claim 4, it is characterised in that the first node determines the first channel characteristics bag Include：
The first node sends request to the base station of the cellular network；
Obtain the reference signal parameter of interfering nodes；
Reference signal from the interfering nodes is received according to the parameter, and described first is determined according to the reference signal Channel characteristics.
6. according to the method for claim 1, it is characterised in that the first node determines the second channel feature bag Include：
Obtain at least one second channel feature from least one section point.
7. according to the method for claim 1, it is characterised in that the merging interference signal and signal bag to be sent Include：
Obtain the maximum transmission power of the interference signal；
According to the maximum transmission power of the interference signal, the maximum transmission power of the signal to be sent and described first Channel characteristics, second channel feature and the 3rd channel characteristics, determine the interference signal and the weight of signal to be sent；
Merge the interference signal and signal to be sent according to the weight.
8. according to the method for claim 7, it is characterised in that the maximum transmission power bag for obtaining the interference signal Include：
Receive the maximum transmission power of the interference signal of the base station from cellular network.
9. according to the method for claim 7, it is characterised in that described to determine the interference signal and the power of signal to be sent In weight, the weight is determined according to following formula：
<mrow> <mo>|</mo> <msub> <mi>w</mi> <mn>1</mn> </msub> <mo>|</mo> <mo>=</mo> <mfrac> <mrow> <mi>A</mi> <mo>+</mo> <mi>D</mi> <mo>-</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <mi>A</mi> <mo>+</mo> <mi>D</mi> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>-</mo> <mfrac> <mrow> <msup> <mi>AC</mi> <mn>2</mn> </msup> </mrow> <mi>B</mi> </mfrac> </mrow> </msqrt> </mrow> <mi>C</mi> </mfrac> </mrow>
<mrow> <mo>|</mo> <msub> <mi>w</mi> <mn>2</mn> </msub> <mo>|</mo> <mo>=</mo> <msqrt> <mrow> <msub> <mi>P</mi> <mn>2</mn> </msub> <mo>-</mo> <mo>|</mo> <msubsup> <mi>w</mi> <mn>1</mn> <mo>*</mo> </msubsup> <mo>|</mo> <mrow> <mo>(</mo> <msub> <mi>P</mi> <mn>1</mn> </msub> <mo>|</mo> <msub> <mi>h</mi> <mn>12</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>I</mi> <mn>2</mn> </msubsup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>n</mi> <mn>2</mn> </msubsup> <mo>)</mo> </mrow> </mrow> </msqrt> </mrow>
Wherein, A=P2|h23|2
<mrow> <mi>B</mi> <mo>=</mo> <msub> <mi>P</mi> <mn>1</mn> </msub> <mo>|</mo> <msub> <mi>h</mi> <mn>12</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>|</mo> <msub> <mi>h</mi> <mn>23</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>+</mo> <mo>|</mo> <msub> <mi>h</mi> <mn>23</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mrow> <mo>(</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>I</mi> <mn>2</mn> </msubsup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>n</mi> <mn>2</mn> </msubsup> <mo>)</mo> </mrow> </mrow>
C=2P1|h12||h13||h23|
<mrow> <mi>D</mi> <mo>=</mo> <msub> <mi>P</mi> <mn>1</mn> </msub> <mo>|</mo> <msub> <mi>h</mi> <mn>13</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>n</mi> <mn>2</mn> </msubsup> </mrow>
And h12For first channel characteristics, h13For the second channel feature, h23For the 3rd channel characteristics, w1For institute State the weight of interference signal, w2For the weight of the signal to be sent, P1For the maximum transmission power of the interfering nodes, P2For The maximum transmission power of the first node,When being modeled as additive white Gaussian noise for the self-interference of the first node Zero-mean variance,The zero-mean variance of the additive white Gaussian noise of channel between the first node and interfering nodes.
10. according to the method for claim 1, it is characterised in that the first node determine respectively interfering nodes with it is described The second channel feature between the first channel characteristics, the interfering nodes and at least one section point between first node, And the 3rd channel characteristics between the first node and at least one section point include：
The connection that the first node is established between at least one section point；
The first node determines the 3rd channel characteristics.
11. method according to any one of claim 1 to 10, it is characterised in that the interference signal is described first The letter from the interfering nodes that node receives on the Radio Resource for sending the interference signal and signal to be sent Number.
12. method according to any one of claim 1 to 10, it is characterised in that the channel characteristics rush including channel Swash response.
13. a kind of communication node of equipment room direct communication, it is characterised in that the communication node includes：
One receiving module, for receiving the interference signal from interfering nodes；
One sending module, for it can be received by least one section point in a manner of, send the interference signal and treat Send signal；
Wherein, first node is at least in full duplex mould on the Radio Resource for sending the interference signal and signal to be sent Formula；
At least one section point is receiving the interference signal and the signal to be sent that the first node is sent The Radio Resource on, also receive the interference signal from the interfering nodes；
Wherein, the communication node also includes：
One merging module, for merging the interference signal and signal to be sent；
The sending module send the merging in a manner of at least one section point can receive after signal；
Wherein, the merging module includes：
One determining unit, for determining the first channel characteristics between interfering nodes and the communication node, the interference respectively At least one second channel feature and the communication node and described at least one between node and at least one section point At least one 3rd channel characteristics between individual section point；
One combining unit, for according to first channel characteristics, second channel feature and the 3rd channel characteristics, merging dry Disturb signal and signal to be sent；
Wherein, the combining unit merges described dry under conditions of the maximum transmission power for meeting the communication node constrains Signal and signal to be sent are disturbed, to obtain the maximum Signal to Interference plus Noise Ratio at least one section point.
14. communication node according to claim 13, it is characterised in that the interfering nodes are the base station of cellular network.
15. communication node according to claim 14, it is characterised in that the determining unit includes：
One first determination subelement, for determining first channel characteristics according to the pilot signal from the base station.
16. communication node according to claim 13, it is characterised in that the interfering nodes are the user in cellular network Equipment.
17. communication node according to claim 16, it is characterised in that the determining unit includes：
One transmission/monitoring subelement, for believing to the scheduling that the base station of the cellular network sends request or monitors above-mentioned base station Breath；
One first obtains subelement, for obtaining the reference signal parameter of interfering nodes；
One first determination subelement, for receiving the reference signal from the interfering nodes according to the parameter, and according to institute State reference signal and determine first channel characteristics.
18. communication node according to claim 13, it is characterised in that the determining unit includes：
One second determination subelement, for obtaining at least one second channel feature from least one section point.
19. communication node according to claim 18, it is characterised in that the combining unit includes：
One second obtains subelement, for obtaining the maximum transmission power of the interference signal；
One weight determination subelement, the maximum for the maximum transmission power according to the interference signal, the signal to be sent Transmission power and first channel characteristics, second channel feature and the 3rd channel characteristics, determine the interference signal and treat Send the weight of signal；
One merges subelement, for the weight merging interference signal that is determined according to the weight determination subelement and to be sent Signal.
20. communication node according to claim 19, it is characterised in that described second, which obtains subelement reception, carrys out cellular autofluorescence The maximum transmission power of the interference signal of the base station of network.
21. communication node according to claim 20, it is characterised in that the weight determination subelement is according to following public affairs Formula determines the weight：
<mrow> <mo>|</mo> <msubsup> <mi>w</mi> <mn>1</mn> <mo>*</mo> </msubsup> <mo>|</mo> <mo>=</mo> <mfrac> <mrow> <mi>A</mi> <mo>+</mo> <mi>D</mi> <mo>-</mo> <msqrt> <mrow> <msup> <mrow> <mo>(</mo> <mi>A</mi> <mo>+</mo> <mi>D</mi> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>-</mo> <mfrac> <mrow> <msup> <mi>AC</mi> <mn>2</mn> </msup> </mrow> <mi>B</mi> </mfrac> </mrow> </msqrt> </mrow> <mi>C</mi> </mfrac> </mrow>
<mrow> <mo>|</mo> <msubsup> <mi>w</mi> <mn>2</mn> <mo>*</mo> </msubsup> <mo>|</mo> <mo>=</mo> <msqrt> <mrow> <msub> <mi>P</mi> <mn>2</mn> </msub> <mo>-</mo> <mo>|</mo> <msubsup> <mi>w</mi> <mn>1</mn> <mo>*</mo> </msubsup> <mo>|</mo> <mrow> <mo>(</mo> <msub> <mi>P</mi> <mn>1</mn> </msub> <mo>|</mo> <msub> <mi>h</mi> <mn>12</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>I</mi> <mn>2</mn> </msubsup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>n</mi> <mn>2</mn> </msubsup> <mo>)</mo> </mrow> </mrow> </msqrt> </mrow>
Wherein, A=P2|h23|2
<mrow> <mi>B</mi> <mo>=</mo> <msub> <mi>P</mi> <mn>1</mn> </msub> <mo>|</mo> <msub> <mi>h</mi> <mn>12</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>|</mo> <msub> <mi>h</mi> <mn>23</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>+</mo> <mo>|</mo> <msub> <mi>h</mi> <mn>23</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mrow> <mo>(</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>I</mi> <mn>2</mn> </msubsup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>n</mi> <mn>2</mn> </msubsup> <mo>)</mo> </mrow> </mrow>
C=2P1|h12||h13||h23|
<mrow> <mi>D</mi> <mo>=</mo> <msub> <mi>P</mi> <mn>1</mn> </msub> <mo>|</mo> <msub> <mi>h</mi> <mn>13</mn> </msub> <msup> <mo>|</mo> <mn>2</mn> </msup> <mo>+</mo> <msubsup> <mi>&amp;sigma;</mi> <mi>n</mi> <mn>2</mn> </msubsup> </mrow>
And h12For first channel characteristics, h13For the second channel feature, h23For the 3rd channel characteristics, w1For institute State the weight of interference signal, w2For the weight of the signal to be sent, P1For the maximum transmission power of the interfering nodes, P2For The maximum transmission power of the communication node,When being modeled as additive white Gaussian noise for the self-interference of the communication node Zero-mean variance,The zero-mean variance of the additive white Gaussian noise of channel between the communication node and interfering nodes.
22. communication node according to claim 13, it is characterised in that the determining unit：
One connection subelement, for establishing the connection between the communication node and at least one section point；
One the 3rd determination subelement, for determining the 3rd channel characteristics.
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